Peak Runoff Prediction Method for Small Rural Watersheds in Colorado

摘要

In the study, a peak runoff regression model was derived using dimensional analysis. The model was calibrated by 63 rainfall/runoff events observed from 30 small rural basins in the State of Colorado. It has been found that basin area, slope, shape factor, precipitation, vegetation, and soil type are important factors. In the developed model, vegetation and soil type are merged into a single coefficient. Although for some combinations of soil type and vegetation, sample data were not enough to adequately calibrate the model, the general trend agrees with common understanding of catchment behavior.